Solution : https://service.sap.com/sap/support/notes/538434 (SAP Service marketplace login required)
Key words : 
'process parameter' tab, program termination occurs, bopi solution implement, symptom backorder processing, backorder processing, results display, /sapapo/bop_result, interactively edit, product view, short dump
Related Notes : 
       
| 375193 | Backorder processing: Composite SAP note on posting |